Automatic coupling for railway vehicles



Feb. 7, 1933.

. L. KURTC'JSSY AUTOMATIC -COUPLING FOR RAILWAY VEHICLES Filed Oct. 21, 1926 5 Sheets-Sheet l v /nvemor': I i :QL irfb'ssy Feb. 7, 1933. L U cjssy 1,896.959

AUTOMATIC COUPLING FOR RAILWAY VEHICLES Filed Oct. 21. 192E s Sheets-Sheet '2 I %-f2 --h3 In venfon' Feb. 7, 1933. L. K'uR'TossY 1,896,959

AUTOMATIC COUPLING FOR RAILWAY VEHICLES Filed Oct. 21. 1926 3 Sheets-Sheet 3 I it 235 V05 8 Vus In venfoh:

Patented eb. 7,

UNITED STATES v "nAsznoxunrossv, or nunains r, nnnenniz I Auroim'rrc COUPLING FOB. aarnwny vnnrcnas Application filed October 21, 1926, Serial no. 143344, and iii-Han er age; as, 1925.. I Y

This invention relates to a coupling head, more particularly for railwayvehicles, which is suitable for use with a central buffer coupling, serving the purpose both of acting as J' a buffer and of transmitting the tractive e1fort.- The new coupling head'dilfers from the known coupling heads serving. the same purpose by the peculiararrangement' of its guiding surfaces which is, such: that in proportion to its dimensions thelnewcoupling head has as great-a guiding capacity as possible. Consequently for a given'guidingca: pacity the new coupling head may have smaller dimensions and less weight than the known coupling heads. I we According to the present invention the coupling head has two opposed projections, of which the upper one has a vertical. guiding surface which extends over the entire height of the upper projections and is inclined to the vertical longitudinal central plane of the head and a buffer surface parallel to and offset from the said guiding surface, the guiding and buffer surfaces overlapping in the region of the vertical longitudinal central plane and being connected together by a vertical surface so asto'form an engaging member or neb and a recess having the negative shape of the engagingmember-for the reception of the engaging memberof the other head, while the lower projection has a vertical guiding surface inclined to the vertical central 1ongitudinal plane and a guidlng surface. 1n-

, clined forwardly and downwardly'f-rom the.

horizontal central longitudinal plane coupling means being provided forlocking the coupling headsin coupled relation for draft. In order to enlarge, the guiding capacity the coupling head may in accordance with thein vention be provided with separate engaging members. a y I In the accompanying drawings wherein several constructional forms of the new coupling headare shown: c i

Fig. 1a is a front elevation Fig, 1b atop plan view and Fig. 10 aperspective View of a coupling head constructed with the invention. I p

Fig. 2a isa front elevationrpF-ig. 2b atop plan view of asecond form of the invention.

' pl n View and Fig. 5a a si .Tliis latter guiding surface'l extends only members" Inf-I2; without the weightTot, the I head being appreciably increased; 'TlieeX- .in accordance I e jectionjvoianditlie extension fi horizontally and laterally-of the same." 1 'Whentwo-couplinglheads of thekind, de-

F 20.15 atopplan view of two'lheads of v the type, shown in Fig.12a coupled together. Fig. 265 is a perspective view of the form ofhead shown inFig'. 2a; Fig. 3a is'a front elevation, Fig. 3b atop plan view and "Fig. 3a a side elevation 'ofa;

third form of the invention...'

Ei na is afront'elevation, "Figqth a top plan view and Fig. 40 aside elevation of a fourth form of the invention: 9 Fig; 5a isa frontelevatiom-Fig. atopv y de; elevation of a fifth forni of theinvention. Y

' Thecoupling head shown to 10 has two opposed projections V0 and VM, 9 of whichthe upper'projection Vo' has a vertical guiding surface 1S1, which extends over the entire height ofthe upper projection and is inclined to the vertical central longitudinal planeL1,L1 of the coupling head and a bufi'ersurface S2 parallel to and ofiset from the surface S1. The surfaces S1, S2 overlap in the region of the plane-Ll.L1', the

overlapping portions beingconnected together by .asur'face m so asto form' anengaging rnem'ber or neb Nana a recess A havingthjelnegat'iveshape'of tlieln ember N for the receptionof the engaging member'N of the other-head. A surface a which lies in or parallel .to the-horizontal longitudinalcentral plane L2,, L2 constitutes abutment for thebottom of the upperprojection of the other coupling head. The' lower projection Vu of the coupling head has a guidingsur- I face it which is inclined to the horizontallongitudinal central plane LQ-LQ and a. guiding surface 1 which'is inclined to the'verjtioal longitudina central plane 'LlLl.

as .far as the vertical longitudinal centralg plane:fLlL 1 without" in any wayfaifecting the extent oft'he g iding capacitylf The guil; ing' capacity of thehead however increased b the p o si nxof prdiect g' engaging.

tensiontI extends vertically' from the pro- 7 heads are connected together. i 'Ffi l scribed come "into engagement withone another, they are guided laterally into proper position by the lateral guiding surfaces S1 7 7 and 1, while in the vertical direction the heads are guided by the surface h. After the two I heads have slid into complete engagement the upper projection V0 of one head rests in the V re'cess A of the second headgformed byolfsetting the surfaces S1, S2, while the lower projection Va fits in thespace below the pro jectionVo, the surface 1 resting "against-asurface is forming aicontinuation' of the surface 1, the surfaces S1'andS2 ofrthetwo heads resting against one anotherover their entire extent and relatively transmitting the forcesin the manner of a buffer; The ex tensions ril -J2 increase theguidin'g capacity, by the edgeof' the'extension t1, which is parallel to the guiding surface S1 .coacting,

when the diiferenceof position in'the vertical direction-{of thetwo heads is great, with the guiding surface 81 ofthe other 7 head and by the lowerhorizontal edge of the extension t2, (Fig. 1a) coacting, when; the

horizontal difference of position of the two heads is considerabl with the guiding surface .h oftheother' head. With thisarrange- I .ment the extension tl acts'a's aguide inthe horizontal direction and the eXtenSiontQ in the vertical direction; For'holding the two I coupling heads in coupled relation in the case of the construction shown in Figures; 1a to 10, any suitable known type of locking means may be used, as for'instance, a coupling pin 6 mountedin'the upper projection of one head .engageable'in an opening 0 1n 7 the other head., Thus, by offsetting the surfacesSLISQ and constructingthern'so as to 'over1ap,'the' interengagingflnebs of'the heads transmit, according to the position. of the .inner'neb surface with'respectto. the longitudinal axis, at least a portion 'of theQ trac- 'tive efiort. In theconst'ructional forrn shown in Figures 2a to 2d, the construction of the I upper projection V02 is similar to that of the'projection 'Voin Figs. 1a to 10, the

surfaces S3, S4, m1 corresponding'to the m 1 and "forming a ne'bNi mm recess A1 corresponding to the neb N and recess A. The lower projection V102 is r I of the same construction as "the lower projection Vu, the surfaces h2and Z2 correspond-- .ing to the surfaces hand '1, respectively. Similarly, the members t3, t4 correspond to the member t1, t2 of, Figsj1a- -1b. In this confstructional form a coupling pin B, is? located in *ailateral boss Ton theflupper projection v02; The pinfB is acted on by a compressionf spring (shown ig. 2b 'in broken lines) which tends to force the pin forwards.

On the opposite sideaof the coupling head in r :a boss D arrecess-isprovided atthesa ne level as the pi'nTB, in-whichthef'pin jo'f the other coupling head engages, whereby the two buffersurfaces. I e

' The guiding capacity of the coupling head the coupling the is forced backwards in opposition to the spring. The face R of the on an adjacent head'may have any angle to .the vertical longitudinal central plane of the head, the angle being preferably such that,

boss Dforreceiving the pin and the face t 7 a of the projecting part T lying opposite to it' 7 after the-heads have slid into .en'gagement,

the two faces rest againstone another, as is shown in Fig. 20. In this case towards the end of the interengag'ement of' the parts the V two faces will act as guidingsurfaces and,

after the heads have coniein contact, as

shownin Figs. 3a to 36- is 'furthermcreased by the lower part of the upper projection 3. 03, 'beingbevelled'ofi" so a'sto provide an additional surfacefl which is inclined- 4o-"the horizontal longitudinal central plane downwardly from front ,to 'bacll' As an abutment for the same surface on tlie'otl1erl1ead,'the

is iriclinedto the horizontal longiiudinal'censurface f2 isprov'idedwhich' isofinecessity placed at the sanie height as the surface f1,"- f 90 recessfin' the boss D1 in asirnilar manner to the pin B. In this construction, the coupling head does not have asurfacelc forming av continuation of the surface Z3 of the lower way; The surface k3 is'siinilar to k2.

'Theforrn of the liead may be still further; siinplifiedas shown in 'Fi gur'e's-aafto l'c;by -forming 'th e lower projection as anarrow engaging member-Val'havingnarrcw-i 17 faces Z4, k4 instead of the surfaces Z3-,.h3"

of Figures-8a to 3c,'which are comparatively wide'. The construction'of the upper proje'cs 'ti'oniVO with its su'rfacesSZ, SS is thesarne 7 as that showniinFigures 3a'to 30.

The constructional form shown inFigures i '100' projection Vu3, but the guiding capacity at i the headis not thereby diminished in any 5a to 5c is not provided. with the bevelled a 7 surfaces f1, f2, these being replaced by the guiding, edge u a which is' inclined to both longitudinal central "planes, for increasing the guiding capacity of the hcadj This guiding edge on the. underside oftherupp'er projection Voforms'the lower limit of, the

boss receivingthepin B5, the member t5, forming a. CQIltlIlll ZttlOD Of the said guiding edge. I

, The engaging'membenva5 of Figsioa to 50- I ,as shown in Fig.1 5071s displaced"somewhat forwardly, and thesurfaces S9, S10, hoand' Z5 act in'the same manner as the surfaces ST,

S8 ,and'h4,l4: of Figs. 4a to 40f.

"if t should be expresslyunderstooo, that-for the "genieratrix' ofithe surfaces S1, S2 of Tthe coupling heads shown in Figs. 2a to 50, in

place of a line containing a sine curve as shown in these figures any other suitably curved line may be used.

What I claim is;

1. An automatic central buffer coupling for railway vehicles, comprising a coupling head having an upper projection and a lower projection, opposite said upper projection, the upper projection having a vertical guiding surfaceinclined to the vertical central longitudinal plane andexte ndingon both sides of said plane over the entire height of the upper projection of the coupling head, a buffer surface parallel a-ndoflset to said guiding surface and overlappingthe latter and a surface connected to the overlapping portions of said guiding and buffer surfaces,

so as to form an engaging member and a recess having the negativeshape of the said engaging member for the reception of the engaging member of a second head, the lower projection having a. vertical guiding surface inclined to the vertical central longitudinal plane and a guiding surface inclined forwardly and downwardly from the horizontal central longitudinal plane, an extension member on the upper projection extending-vertically therefrom and a horizontal extension extending laterally therefrom and adapted to engage the guiding surfaces of a second coupling head, and coupling means for locking two heads in coupled relation for draft, as and for the purposes set. forth.

2. An automatic central buffer coupling for railway vehicles, comprising a coupler member and a recess having the negative shape of the said engaging member for the reception of the engaging member of a second head, the lower projection having a'vertical guiding surface inclined to the vertical ceninclined forwardly and downwardly from the horizontal central longitudinal plane, a vertical surface on the'uppe'r projection extending laterally from the guiding surface thereon and inclined with respect to the vertical central longitudinal plane and to said guiding surface, an extension on the upper proj ection adjacent the buffer surfaceand having a surface thereon inclined with respect to the vertical central longitudinal plane and adapted to partially embrace a second head,

' said extension having an opening therein,

forth.

central buffer coupling and a locking-member movable in the upper projection and capable of protrudingfrom the vertical surface extending laterally from the guiding surface, said locking member being adapted to enter the opening in the ex tension of a second head in-the coupled position of the heads, and coupling means for locking the coupling heads in coupled relation for draft, as and for the purposes set 3. An automatic for railway vehicles, comprising'acoupling head having an upper projection and a lower overlapping one another in the region ofthe vertical central longitudinal plane and a surface connectedto the overlapping portions of said guiding and buffer surfacesso as'to form an engaging member and a 'recessfor the engaging member of a second head, the lower projection extending beyond the con} V fines of said recess forwardly and downwardly therefrom and having-a vertical guiding surface inclined to the vertical central longitudinal plane in an opposite direction to the vertical guiding surface of the upper projection and adapted to engage the corresponding vertical guiding surface of the lower projection of a second head for guiding the heads laterally into alignment, and a guiding surface inclined downwardly and forwardly from the horizontal central longitudinal plane of the coupling head, and coupling means for holding two heads in coupled relation.

4. An automatic coupling as claimed in claim 3 characterized by the provision of a locking member movable in the upper projection, and a recessed extension on the upper projection adapted to receive the member of a second head.

5. An automatiecouplingas claimed in claim 3, characterized by the provision of a locking member movable ,inthe upper pro jection, and arecessed extension on the upper projection adapted to receive the locking Vtral longitudinal plane and aguiding surfacemember of a second head, said locking member being arranged at the same height as and to one side of saidengaging member.

locking 6. A, coupling as claimed in claim 8, char- 1 acterized by the provision of vertically and horizontally disposed memberson the upper j projection adapted to engage the guiding surfaces of a second head.

v In testimony whereof I have signed my name to this specification.

,LAszLo KI'JRTOSSY, 

